It may not be "tool time," but it is a mini "Home Improvement" reunion as cast members Jonathan Taylor Thomas & Tim Allen will soon appear together again on the set of Last Man Standing. US Weekly reports that, fifteen years after ending his run as Tim Allen's second-oldest son on the 1990s sitcom Home Improvement, Jonathan Taylor Thomas is reuniting with his former TV dad on Allen's new show, Last Man Standing. Although Jonathan's appearance was previously reported last month, the airdate…